Gotthardt Impeller for Mercury & Mariner – Cooling Water Impeller (47-22748)

A defective impeller will put your engine under heat stress faster than you can react. This Gotthardt replacement impeller keeps the cooling water circuit of your Mercury or Mariner outboard running – precisely manufactured as a replacement for the original part number 47-22748.

Tip: Impellers should be replaced at least every two years or every 200 operating hours – don't wait until the cooling water jet weakens. When installing, check all rubber blades for cracks and lightly lubricate the inner surface of the pump housing with petroleum jelly to prevent the impeller from running dry when starting up.